Roll web terminal



Oct; 31, 19 J, E. MCMULLEN 2361,85?

ROLL WEB TERMINAL Filed .July .24, 1943 lNVE NTOR M055 ENE/704 4wATTGE'N EYS.

the invention.

Patented Oct. 31, 1944 UNITED STATES PATENT OFFICE ROLL WEB TERMINALJoseph E. McMullen, Milwaukee, Wis. A Application July 24, 1943, SerialNo. 495.998

' Claims. (Cl. 242-58) release such end with a minimum of strain so thatthe resulting joint will almost invariably be perfect.

In web feeding devices, such as are used on printing presses and thelike, it has become common to join the web of a nearly exhausted roll tothe end of the web of a full roll so that the web may continue to be fedat substantially constant speeds without interruption for the making ofthe joint. A poor joint means serious delay and may necessitate acomplete re'-threading of the web through the press. In practical use,no paster failures or breakages have occurred attributable to the webend construction herein disclosed.

Other advantages and objectives of the invention will be apparent tothose skilled in the art upon examination of the following disclosure ofIn the drawing:

Fig. l is a diagrammatic view in end elevation of a reel supporting asubstantially exhausted roll and a plurality of full rolls, the Web fromthe exhausted roll being diagrammaticallyshown in proximity to one ofthe full rolls in preparation for making a paster.

Fig. 2 is a view on an enlarged scale showing- 7 the Web endconstruction embodying this invention in front elevation.

Fig. 3 is a plan view of the joint which results from using my improvedweb end construction in a pastor.

Fig. 4 is a plan view on a reduced scale of a web section with pastorjoint and severed tabs resulting from my invention.

Like parts are identified by the same reference characters throughoutthe several views.

The standard 9 supports a reel 5 which carries the arbors for a numberof rolls 6, l and 8. In preparation for making a pastor or joint, thefull roll is set into rotation at peripheral speed approximating thelinear rate of travel of the web Ill and thereupon the Web ID from thenearly exhausted roll 6 is forced by the brush ll into close proximityto the full roll 8. As the brush H brings the web 10 into contact withthe web of the full roll 8 at the joint, the Web ID is severed by aknife at 12 and the paster is effected. The

web I0 is then withdrawn from thefull roll 8 until that roll, in turn,is exhausted, whereupon the operation is repeated.

The web II] on roll 8 is prepared for the paster in accordance with thepresent invention, as shown in Fig. 2. It is provided with one or morereduced ends IS, the number of Which will depend upon the Width of theweb and the resulting length of the roll. Adjacent the extremity of eachof the ends [5, I provide laterally projecting tongues at I 6 formed byundercutting the side margins of the web end at IT. Laterally beyond theundercut margin ll of the web I0, each of the tongues I6 is secured insome manner to the underlying face of the next convolution of the Web atthe surface of roll 8. The manner in which I prefer to effect thisconnection is to use gummed tabs 18, preferablyof a web-matching color,the inner margins of which are preferably parallel to each other and tothe longitudinal center line of the web end. These tabs preferably,though not necessarily completelyspan the respective tongue I6 and areadhesively joined not only to the tongues, but to the face of theunderlying portion of the web. The tabs may, as shown, be wider than theprojection of tongues l6 so that each tongue is secured all about itsmargins to the underlying web, this being preferred to the use ofnarrower tabs. 1 The fact that the tabs, regardless of their width, spanthe tongues assures against any torsional stress or lateral stress ofthe web during the paster. It also holds the web ends l5 severally tothe faceof the roll with security.

The ends 15 of the web are now coated with a tacky adhesive at H! towhich the face of the Web will readily adhere during the pastingoperation. The pattern of adhesive shown is preferred. The entiresurface of the extremity of each end 15, save for a fraction of an inchalong the margins, is coated. Thence bands 2| extend in spaced relationto the margins and finally turn parallel to the center line at 22. Otherdivergent bands 23, 24, 25 are in the intermediate space.

When the pasting operation occurs and the running web is forced intocontact with the tacky adhesive l9, the running web becomes integrallyjoined to the Web of the full roll and pulls the ends from the full rollto move with the running web. In this operation, it is the tendency forthe web ends to tear parallel to the longitudinal center line of theweb. The fact that th inner margins of the tabs l8 are parallel to thatcenter line encourages this natural tendency and severe the tabs with ashearing action. The tongues are, therefore, sheared neatly as indicatedat 20 in Fig. 3. The fact that the undercut margins l! of the respectiveweb ends intersect the lines upon which the tearing occurs results inpositive assurance that such margins willintercept the tear, in eachinstance, so that there will be no possibility of the tear extendinginto the web proper. Despite the fact that the web ends are anchored tothe base of the roll with the greatest security, the anchored tonguesare torn off with uniformity in every operation.

The tabs and underlying severed ends of tongues l6 remain on the face ofthe web as indicated at 26 in Fig. 4. So neatly are the tongues severedand so inconspicuous are they beneath the web-matching tabs that thisportion of the web may be printed and used, reducing by at least onehalf the amount of wastage heretofore involved in a paster.

I claim:

1. A web wound in a roll and having an end portion of reduced widthcoated at least in part with a tacky adhesive, and at least one tongueprovided with means connecting it with the underlying face of the rolledweb and adjacent which said tongue will tear in a high speed paster,said web end portion having an undercut margin intersecting the linelongitudinally of the web upon which said tongue will tear.

2. A web wound in a roll and having an outer end portion of reducedwidth held to the face of the roll, said end having at'least onelaterally extending tongue and an undercut margin extending toward thecenter line of said end portion to form the tongue, and a tab connectingthe tongue to the roll along a line extending in the general directionin which the roll is wound.

3. The structure of claim 2 wherein said tab spans the tongue and isprovided with means connecting the tab to the roll both within andbeyond the tongue.

4. The structure of claim 2 wherein the tab has a margin approximatelyparalleling the margin of the web and within which said tongue tends tobe severed upon a line longitudinally of the web and intersecting saidundercut web margin.

5. The structure of claim 2 wherein the tab means completely covers theend of the tongue and is adhesively fastened to the tongue and to theroll about the tongue margins both within and beyond the tongue.

6. A web having an end portion of reduced width provided near itsterminus with oppositely and laterally projecting tongues, said endportion having undercut margins beyond which said tongues project, saidweb being wound in a roll having a face underlying said tongues and towhich said tongues are connected outside of said undercut margins.

7. A web having an end portion of reduced width provided near itsterminus with oppositely and laterally projecting tongues, said endportion having undercut margins beyond which said tongues project, saidweb being wound in a roll having a. face underlying said tongues,together with tabs spanning the tongues outside of the undercut marginsof the web and ad hesively connected to the underlying roll face.

8. A web having an end portion of reduced width provided near itsterminus with oppositely and laterally projecting tongues, said endportion having undercut margins beyond which said tongues project, saidweb being wound in a roll having a face underlying said tongues,together with tabs spanning the tongues outside of the undercut marginsof the web and adhesively connected to the tongues and the adjacentportion of the underlying roll face, the tabs having marginsapproximately parallel to each other and to the center line of the web.

9. The device of claim 8 in which the tabs match the web andsubstantially completely cover the ends of the tongues.

10. A web wound in a roll, having its outer end portion provided with anextension having sides terminating in laterally extending tongues, incombination with narrow tabs of slight tensile strength, each spanningone of the tongues in the general direction of the web and in a positionlaterally offset from the side from which said tongue extends andconnected to the underlying face of the roll both within and beyond thetongue, whereby a moving web in paster-joint connection with saidtapered end portion may tear such end portion from the tongues and theunderlying face of the roll without material dis tortion of either weband without tearing said sides.

JOSEPH E. McMULLEN.

